# Focus of Parabolic Reflector Calculator

## Formula for the Focal Distance of a Parabolic Reflector Given its Depth and Diameter
The equation of a parabola with vertical axis and vertex at the origin is given by
## How to Use the Focal Distance Calculator
Enter the depth d and the diamter D as positive real number and click on "Calcualte". The answer is the focal distance f.
## More References and Links to ParabolaEquation of a parabola.Tutorial on how to Find The Focus of Parabolic Dish Antennas. Tutorial on How Parabolic Dish Antennas work? Three Points Parabola Calculator. Use of parabolic shapes as Parabolic Reflectors and Antannas. |